SODIUM TRIPOLYPHOSPHATE, METHOD OF OBTAINING IT AND APPLICATIONS

摘要

The invention relates to an anhydrous sodium tripolyphosphate which has an apparent density of from 0.5 to 1.1, a mean agglomerate size of less than 100 microns and a phase 1 content from 15 to 60%, and which does not contain any insoluble substances. This new product is useful in the food and detergent industries. A method for making the new tripolyphosphate is described. Wherein a solution of alkaline phosphates is prepared, with an Na/P ratio of from 1.64 to 1.70, by adjusting the ratio to the Na/P ratio required in the final product; the solution is fed along the axis of a symmetrical vortical flow, into the low pressure zone of said flow; and the product obtained is collected.